Precision Cooling
For Business-Critical Continuity
Liebert Deluxe System/3™ - DX
Installation Manual - 50 and 60 Hz, 6-30 Ton DX Systems (DH/DE/VH/VE)
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TABLE OF CONTENTS
PRODUCT MODEL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V
1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.1 System Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1.1 Compressorized Two-Step Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1.2 Compressorized Four-Step Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1.3 GLYCOOL™ (Chilled Glycol Cooling) Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1.4 Dual Source Cooling Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.0 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.1 Room Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Location Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.3 Unit Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4.1 Drain Line. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4.2 Piping Considerations for Raised-Floor Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.5 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.6 Air Distribution Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.6.1 Raised-Floor Air Flow Distribution Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.6.2 Upflow Systems Additional Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.6.3 Ducted Application Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.6.4 Plenum Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.6.5 Filter Box Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.0 AIR COOLED MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
3.1 Condenser Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1.1 Outdoor Prop Fan Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1.2 Indoor Piggyback Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2.1 High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2.2 Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2.3 Lee-Temp/Flood Back Head Pressure Control Condensers (Standard on Piggyback Models) 19
3.3 Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.4 Fan Speed Control Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.4.1 Materials Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.4.2 Dehydration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.4.3 Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.5 Lee-Temp/Flood Back Head Pressure Control Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.5.1 Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.5.2 Materials Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.5.3 Dehydration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.5.4 Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.5.5 Refrigerant Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.0 GLYCOL COOLED/GLYCOOL™ MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
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4.1 Drycooler Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.1.1 Outdoor Prop Fan Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.1.2 Indoor Piggyback Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.2 Drycooler Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.3 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.3.1 High Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.3.2 Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.3.3 Pump And Drycooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.4 Glycol Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.5 Preparation of Glycol Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5.0 WATER COOLED MODELS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
5.1 Piping Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.2 Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.3 Water Regulating Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.3.1 Testing Valve Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.3.2 Manual Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
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FIGURES
Figure 1 Downflow (DH and DE models) cabinet and floor planning dimensional data . . . . . . . . . . . . . . . . 4
Figure 2 Upflow 6, 8 and 10 ton (VH and VE models) cabinet and floor planning dimensional data . . . . . 6
Figure 3 Upflow 6, 8 and 10 ton (VH and VE models) blower duct and deck dimensional data . . . . . . . . . . 7
Figure 4 Upflow 15, 20 and 22 ton (VH and VE models) cabinet and floor planning dimensional data . . . 8
Figure 5 Upflow 15, 20 and 22 ton (VH and VE models) blower duct and deck dimensional data . . . . . . . . 9
Figure 6 Upflow 30 ton (VH and VE models) cabinet and floor planning dimensional data. . . . . . . . . . . . 10
Figure 7 Upflow 30 ton (VH and VE models) blower duct and deck dimensional data . . . . . . . . . . . . . . . . 11
Figure 8 Electrical connection details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 9 Electrical field connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 10 Ducting configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 11 Plenum dimensional data for 6 - 22 ton models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 12 Plenum dimensional data for 30 ton models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 13 Piping: Fan speed control condensers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 14 Piping: Lee-Temp control condensers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 15 Downflow air cooled (DH) piping connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 16 Upflow air cooled (VH) piping connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 17 Outdoor air cooled 1-4 fan condenser cabinet and anchor dimensional data . . . . . . . . . . . . . . . . 25
Figure 18 Outdoor air cooled 6 and 8 fan condenser cabinet and anchor dimensional data . . . . . . . . . . . . . 27
Figure 19 Air cooled model general arrangement diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 20 Piggyback condenser cabinet and floor planning dimensional data . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 21 Piggyback condenser piping connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 22 Lee-Temp control condenser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 23 Lee-Temp control typical general arrangement diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 24 Downflow glycol cooled (DH) piping connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 25 Upflow glycol cooled (VH) piping connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 26 Downflow GLYCOOL™ cooled (DE) piping connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 27 Upflow GLYCOOL™ cooled (VE) piping connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 28 1-4 fan drycooler cabinet and anchor dimensional data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 29 6- and 8-fan drycooler cabinet and anchor dimensional data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 30 Glycol general arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 31 GLYCOOL™ general arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 32 Water cooled general arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 33 Downflow water cooled (DH) piping connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 34 Upflow water cooled (VH) piping connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
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TABLES
Table i Model number designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Table ii Unit weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Table 1 Downflow (DH and DE models) dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 2 Upflow 6, 8 and 10 ton (VH and VE models) blower duct and deck dimensional data. . . . . . . . . . 7
Table 3 Upflow 15, 20 and 22 ton (VH and VE models) blower duct and deck dimensional data . . . . . . . . 9
Table 4 Upflow 15, 20 and 22 ton (VH and VE models) blower duct and deck dimensional data . . . . . . . 11
Table 5 Recommended free area ft2 (m2 for grilles or perforated panels at output velocities of 550
and 600 fpm (2.8 and 3.1 m/s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 6 Plenum dimensional data for 6 - 22 ton models, in. (mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 7 Plenum dimensional data for 30 ton models in. (mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 8 Recommended line sizes – O.D. copper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 9 Fan speed control condenser piping connection sizes - Cu OD. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 10 Lee-Temp control condenser piping connection sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 11 Downflow air cooled (DH) piping connection sizes, inches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 12 Factory provided piping connection sizes, inches, upflow air cooled (VH). . . . . . . . . . . . . . . . . . . 24
Table 13 Outdoor air cooled 1-4 fan condenser physical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 14 Outdoor air cooled 6 and 8 fan condenser physical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 15 Refrigerant control settings psi (kPa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 16 Piggyback condenser dimensional data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 17 Piggyback condenser piping connection dimensional data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 18 Piggyback condenser approximate refrigerant charges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 19 Liquid line charge lb/10 ft. (kg/.3m) R–22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 20 Refrigerant control settings for air cooled units psi (kPa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 21 Indoor unit approximate refrigerant charge lb (kg.) R–22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 22 Outdoor condenser approximate refrigerant charge lb (kg) per circuit . . . . . . . . . . . . . . . . . . . . . 32
Table 23 Glycol concentration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 24 Refrigerant control settings for glycol cooled units—psi (kPa) . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 25 Deluxe glycol volume approximate gal. (l) max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 26 Volume in standard Type L copper piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 27 Room dew point temperatures °F (°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Table 28 Downflow glycol cooled (DH) piping connection sizes, inches . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 29 Factory-provided piping connection sizes, inches, upflow glycol cooled (VH) . . . . . . . . . . . . . . . . 39
Table 30 Downflow GLYCOOL (DE) piping connection sizes, inches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 31 Upflow GLYCOOL (VE) piping connection sizes, inches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 32 Glycol pump data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Table 33 1-4 fan drycooler physical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 34 6- and 8-fan drycooler physical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Table 35 Refrigerant control settings for water cooled units—psi (kPa) . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Table 36 Downflow water cooled (DH) piping connection sizes, inches . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Table 37 Factory-provided piping connection sizes, inches, upflow water cooled (VH) . . . . . . . . . . . . . . . . 52
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PRODUCT MODEL INFORMATION
Equipment Inspection
Upon arrival of the unit, inspect all items for either visible or concealed damage. Damage should be
immediately reported to the carrier and a damage claim filed with a copy sent to Liebert or to your
sales representative.
Table i Model number designation
DH 245 A – A A E I
VH = Upflow DX Nominal
Capacity in
Thousand
BTU/H
A = Air
Cooled
U = 4 Step DX A = 460/3/60 A = Advanced
Micro-processor
0 = No
Reheat
0 = No
Humidifier
B = 575/3/60
DH = Downflow DX W = Water
Cooled
H = DX with
Hot gas
Bypass
C = 208/3/60 G = Advanced
Graphics
Micro-processor
E = Electric
Reheat
I = Infrared
Humidifier
D = 230/3/60
DE = Downflow DX
w/ Econ-O-
Coil
G = Glycol
Cooled
F = 380/3/50 H = Hot Water
Reheat
G = Steam Grid
Humidifier
G = 415/3/50
VE = Upflow DX
w/ Econ-O-
Coil
H = 230/3/50 G = Hot Gas
Reheat
S = Steam
Generating
Humidifier
J = 200/3/50
M = 380/415/3/50 T = Steam
Reheat
!WARNING
Installation and service of this equipment should be done only by qualified personnel who
have been specially trained in the installation of air conditioning equipment. Improper
installation could result in property damage, injury or loss of life.
!WARNING
Hazardous voltage! Always disconnect power before servicing.
!CAUTION
Evaporator unit requires drain connections and may also require water supply. Do not locate
directly above any equipment that could sustain water damage.
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vi
Table ii Unit weights
Capacity and Cooling Type Weight lbs (kg)
Air Cooled Models
DH/VH, 60 (50) Hz
75A 1205 (547)
114A (115A) 1425 (647)
125A (130A) 1440 (645)
199A 1840 (835)
245A 1960 (890)
290A 2025 (920)
380A 2160 (981)
Water Cooled Models
DH/VH, 60 (50) Hz
86W 1455 (661)
127W (128W) 1675 (761)
138W (143W) 1690 (768)
219W 2110 (957)
267W 2280 (1036)
315W 2345 (1065)
412W 2500 (1135)
Glycol Cooled Models
DH/VH, 60 (50) Hz
72G 1455 (661)
110G (111G) 1685 (765)
116G (121G 1700 (772)
192G 2130 (967)
240G 2300 (1045)
265G 2365 (1074)
363G 2530 (1148)
GLYCOOL Models
DE/VE, 60 (50) Hz
72G 1615 (733)
110G (111G) 1845 (837)
116G (121G) 1860 (844)
192G 2385 (1082)
240G 2555 (1159)
363G 2750 (1248)
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Introduction
1
1.0 INTRODUCTION
1.1 System Descriptions
Deluxe System/3 environmental control systems are available in several configurations. Each configu-
ration can operate with either Advanced Microprocessor Controls (AM), or Advanced Microprocessor
Controls with Graphics (AG). A brief description of each, including operational differences, can be
found below. Check model numbers to see what is supplied with your unit.
1.1.1 Compressorized Two-Step Systems
These systems may be air, water, or glycol cooled, depending on the heat rejection method selected.
Cooling
Two stages of mechanical refrigeration are available.
Heating
Three stages of electric reheat are standard; steam/hot water, hot gas (on water and glycol cooled sys-
tems) are optional.
Humidification
Infrared is standard. Steam grid and steam generating humidification are optional.
Dehumidification
These systems utilize the lag compressor.
1.1.2 Compressorized Four-Step Systems
The four-stage systems have all the features of a compressorized, two-stage system plus cylinder
unloaders on one head of each compressor. This permits the compressors to operate at a reduced level
and increases energy efficiency during low-load conditions. The system responds to an increasing
room load with either a two-step or a four-step process of increasing the unit's cooling.
Cooling
These systems have four stages of mechanical refrigeration:
a. Lead compressor at reduced capacity
b. Lead and lag compressors at reduced capacity
c. Lead compressor at full capacity; lag compressor at reduced capacity
d. Lead and lag compressors at full capacity
Heating
Three stages of electric reheat are standard; hot water/steam are optional.
Humidification
Infrared is standard; steam grid and steam generating humidification are optional.
Dehumidification.
These systems utilize the lag compressor.
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Introduction
2
1.1.3 GLYCOOL™ (Chilled Glycol Cooling) Systems
GLYCOOL systems have all of the features of a compressorized water or glycol system, plus a second
cooling coil that is connected into the water circuit. When fluid temperature is sufficiently low (below
room temperature), cooling is provided by circulating the fluid through the second cooling coil (flow is
controlled by a motorized valve.) This is then the primary cooling source, and it greatly reduces the
compressor operation.
Cooling
At lower fluid temperatures, the second cooling coil acts as the main cooling system. The motorized
valve opens proportionally to match the room load. At higher fluid temperatures, two or four stages of
mechanical refrigeration control the room load.
Heating
Three stages of electric reheat are standard.
Humidification
Infrared is standard; steam generating is optional
Dehumidification
These systems utilize the lag compressor.
1.1.4 Dual Source Cooling Systems
This system has all the features of a compressorized system but adds a second cooling coil that is con-
nected to a source of chilled water. This second coil is controlled by a modulating control valve. It is
the primary source of cooling and dehumidification so compressor operation is reduced.
Cooling
The second coil acts as the primary cooling system. A modulating valve opens proportionally in
response to the room load. Two and four stages of mechanical refrigeration as a secondary cooling sys-
tem at higher room loads.
Heating
Three stages of electric reheat are standard.
Humidification
Infrared is standard; steam generating is optional
Dehumidification
These systems utilize the chilled water valve, then the lag compressor if required by the load.
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Installation
3
2.0 INSTALLATION
2.1 Room Preparation
The room should be well-insulated and must have a sealed vapor barrier. The vapor barrier in the
ceiling can be a polyethylene film type. Use a rubber-base or plastic-base paint on concrete walls and
floors. Doors should not be undercut or have grilles in them.
Outside, or fresh, air should be kept to an absolute minimum. Outside air adds to the heating, cooling,
humidifying and dehumidifying loads of the site. It is recommended that outside air be kept below 5%
of the total air circulated in the room.
2.2 Location Considerations
For a downflow unit, the unit can sit on an accessible, elevated flooring system. It may be necessary to
furnish additional pedestal support below the unit to ensure maximum structural support. A separate
floor stand for the unit may be used as support, independent of the elevated floor and installed prior
to the flooring system.
For downflow and upflow units, provide approximately 34" (864mm) service clearance on the left,
right and in front of the unit whenever possible. The minimum space required for installation is 18"
(45.7 cm) on the left end, 18" (45.7 cm) on the right end, and 24" (61 cm) in front of the unit. This space
is necessary to permit routine maintenance, such as replacing filters, adjusting the fan speed and
cleaning the humidifier.
Avoid locating units in an alcove or at the extreme end of a room that has a high aspect ratio (long
narrow room). Also avoid locating units too close together. This tends to reduce the effectiveness of
the air distribution as compared to units located 30-40 feet (9-12m) apart.
NOTE
If high efficiency 6" filters are used, 25" (63.5 cm) is required on the right end for removal
and replacement of filters.
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Installation
4
2.3 Unit Dimensions
Figure 1 Downflow (DH and DE models) cabinet and floor planning dimensional data
UNIT DIMENSIONAL DATA
FLOOR CUTOUT DIMENSIONS
UNITS WITH
HIGH PRESSU RE VALVE
&
SHADED AREAS
INDICATE A RECOMMENDED
CLEARANCE OF 34 (864mm)
FOR COMPONENT ACCESS AND FILTER
REMOVAL. FOR RECOMMENDED
MINIMUM CLEARANCE, REFER
TO THE INSTALLATION MANUAL.
DPN000526 Rev0
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Installation
5
Table 1 Downflow (DH and DE models) dimensions
Air Cooled
Water Cooled
Glycol Cooled
GLYCOOL
Dimensional Data
inches (mm)
60 Hz 50 Hz A B C D E F G H J K L
DH75A
DH86W
DH72G
DE72G
DH75A
DH86W
DH72G
DE72G
74
(1880)
70
(1778)
35
(889)
32
(813)
72
(1829)
33
(838)
14-1/4
(362)
54-3/4
(1391)
35-5/8
(905)
63-1/2
1613
27
(686)
DH114A
DH127W
DH110G
DE110G
DH115A
DH128W
DH111G
DE111G
74
(1880)
70
(1778)
35
(889)
32
(813)
72
(1829)
33
(838)
14-1/4
(362)
54-3/4
(1391)
35-5/8
(905)
63-1/2
1613
27
(686)
DH125A
DH138W
DH116G
DE116G
DH130H
DH143W
DH121G
DE121G
74
(1880)
70
(1778)
35
(889)
32
(813)
72
(1829)
33
(838)
14-1/4
(362)
54-3/4
(1391)
35-5/8
(905)
63-1/2
1613
27
(686)
DH199A
DH219W
DH192G
DE192G
DH199A
DH219W
DH192G
DE192G
99
(2515)
95
(2413)
35
(889)
32
(813)
97
(2464)
33
(838)
16-1/4
(413)
77-3/4
(1975)
35-5/8
(905)
88-1/2
(2248)
27
(686)
DH245A
DH267W
DH240G
DE240G
DH245A
DH267W
DH240G
DE240G
99
(2515)
95
(2413)
35
(889)
32
(813)
97
(2464)
33
(838)
16-1/4
(413)
77-3/4
(1975)
35-5/8
(905)
88-1/2
(2248)
27
(686)
DH290A
DH315W
DH265G
DH290A
DH315W
DH265G
99
(2515)
99
(2515)
35
(889)
32
(813)
97
(2464)
33
(838)
16-1/4
(413)
77-3/4
(1975)
35-5/8
(905) -- --
DH380A
DH412W
DH363G
DE363G
DH380A
DH412W
DH363G
DE363G
122
(3098)
118
(2997)
35
(889)
32
(813)
120
(3048)
33
(838)
16-1/4
(413)
100-3/
4
(2559)
35-5/8
(905)
111-1/
2
(2832)
27
(686)
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6
Figure 2 Upflow 6, 8 and 10 ton (VH and VE models) cabinet and floor planning dimensional data
74" overall
(1880mm)
70" (1778mm)
Plenum Flange
32"
(838mm)
Plenum
Flange
35" overall
(889mm)
Projection of
Display Bezel
5/8" (16mm)
2" (51mm)
2"
(51mm)
1" (25.4mm)
72"
(1829mm)
72" base
(1829mm) 33" Base
(838mm)
Flange provided on
blower outlet for
supply air ducting
1" (25.4mm) flange
for decorative
plenum alignment
Air return
opening
Shaded areas indicate
a recommended
clearance of 34"
(864mm) for component
access and filter
removal
Air grille
supplied on
units with
front return
air only
4-1/2"
(114mm)
33"
(838mm)
72"
(1829mm)
69-3/4"
(1172mm)
69-3/4"
(1172mm)
Air return
opening
20-1/4"
(514mm)
11"
(279mm)
4"
(102mm)
2-1/8"
(54mm)
1-1/8"
(29mm)
FLOOR CUTOUT DIMENSIONS
Models With Bottom Return
DUCT CONNECTION DATA
Models With Rear Return
Floor Level
22"
(559mm)
UNIT DIMENSIONAL DATA
DPN000527 Rev0
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Installation
7
Figure 3 Upflow 6, 8 and 10 ton (VH and VE models) blower duct and deck dimensional data
Table 2 Upflow 6, 8 and 10 ton (VH and VE models) blower duct and deck dimensional data
Blower Supply
Motor
HP
Dimensional Data inches (mm)
ABCDF
VH075A
VH086W
VH072G
VE072G
15 x 15
TOP FRONT 1-5 22-7/8
(581)
3-1/2
(89)
18-13/16
(478)
16-3/16
(411)
1-1/2
(38)
TOP REAR 1-5 22-7/8
(581)
12-5/16
(313)
18-13/16
(478)
16-3/16
(411)
1-1/2
(38)
15 x 11
TOP FRONT 1-5 22-7/8
(581)
3-1/2
(89)
14-7/8
(378)
16-3/16
(411)
1-1/2
(38)
TOP REAR 1-5 22-7/8
(581)
12-5/16
(313)
14-7/8
(378)
16-3/16
(411)
1-1/2
(38)
12 x 9
TOP FRONT 1-5 22-7/8
(581)
5-7/8
(149)
12-7/16
(316)
13 3/4
(349)
1-1/2
(38)
TOP REAR 1-5 22-7/8
(581)
12-5/16
(313)
12-7/16
(316)
13 3/4
(349)
1-1/2
(38)
VH115A/VH114A
VH128W/VH127W
VH111G/VH110G
VE111G/VE110G
15 x 15
TOP FRONT 1.5-5 22-7/8
(581)
3-1/2
(89)
18-13/16
(478)
16-3/16
(411)
1-1/2
(38)
TOP REAR 1.5-5 22-7/8
(581)
12-5/16
(313)
18-13/16
(478)
16-3/16
(411)
1-1/2
(38)
15 x 11
TOP FRONT 2-7.5 22-7/8
(581)
3-1/2
(89)
14-7/8
(378)
16-3/16
(411)
1-1/2
(38)
TOP REAR
2-5 22-7/8
(581)
12-5/16
(313)
14-7/8
(378)
16-3/16
(411)
1-1/2
(38)
7.5 4 1/2
(114)
VH130A/VH125A
VH143W/VH138W
VH121G/VH116G
VE121G/VE116G
15 x 15
TOP FRONT 2-5 22-7/8
(581)
3-1/2
(89)
18-13/16
(478)
16-3/16
(411)
1-1/2
(38)
TOP REAR 2-5 22-7/8
(581)
12-5/16
(313)
18-13/16
(478)
16-3/16
(411)
1-1/2
(38)
15 x 11
TOP FRONT 3-10 22-7/8
(581)
3-1/2
(89)
14-7/8
(378)
16-3/16
(411)
1-1/2
(38)
TOP REAR
3-5 22-7/8
(581) 12-5/16
(313)
14-7/8
(378)
16-3/16
(411)
1-1/2
(38)
7.5-10 23 7/8
(606)
4 1/2
(114)
74" ref
(1880mm)
72" ref
(1829mm)
35" ref
(889mm)
AB
C
D
Blower Deck F
Top of Unit
Duct Flange on Blower
Front of Unit
Blower Duct Flange Location
Front or Rear Air Supply
DPN000528 Rev0
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Installation
8
Figure 4 Upflow 15, 20 and 22 ton (VH and VE models) cabinet and floor planning dimensional data
Air return
opening
5-1/2"
(140mm)
33"
(838mm)
97"
(2464mm)
94-3/4"
(2407mm)
1-1/8"
(29mm)
FLOOR CUTOUT DIMENSIONS
Models With Bottom Return
22"
(559mm)
Floor Level
1" (25.4mm) flange
for decorative
plenum alignment
94-3/4"
(2407mm)
Air
return
opening
24-1/4"
(616mm)
11"
(279mm)
2-1/8"
(54mm)
DUCT CONNECTION DATA
Models With Rear Return
99" overall
(2515mm)
95"
(2413mm)
Plenum Flange
32"
(838mm)
Plenum
Flange
35" overall
(889mm)
Projection of
Display Bezel
5/8" (16mm)
2"
(51mm)
2"
(51mm)
1"
(25.4mm)
76"
(1930mm)
97" Base
(2464mm) 33" Base
(838mm)
Shaded areas
indicate a
recommended
clearance of 34"
(864mm) for
component
access and filter
removal
Air grille
supplied on
units with
front return
air only
UNIT DIMENSIONAL DATA
4"
(102mm)
Flanges provided on
blower outlets for
supply air ducting
DPN000529 Rev0
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Installation
9
Figure 5 Upflow 15, 20 and 22 ton (VH and VE models) blower duct and deck dimensional data
Table 3 Upflow 15, 20 and 22 ton (VH and VE models) blower duct and deck dimensional data
Blower Supply
Motor
HP
Dimensional Data inches (mm)
A BCDE F
VH199A
VH219W
VH192G
VE192G
15 x 15
TOP
FRONT
3-7.5 20-3/8 (518) 3-1/2
(89)
18-13/16
(478)
16-3/16
(411)
12-11/16
(322) 1-1/2 (38)
10 22-7/8 (581)
TOP
REAR
3-5 20-3/8 (518) 12-5/16
(313)
18-13/16
(478)
16-3/16
(411)
12-11/16
(322) 1-1/2 (38)
7.5-10 25-3/8 (645) 10
(254) 4-1/2 (114)
15 x 11
TOP
FRONT
5-7.5 20-3/8 (518)
3-1/2
(89)
14-7/8
(378)
16-3/16
(411)
16-5/8
(422) 1-1/2 (38)
10 22-7/8 (581)
15 25-3/8 (645) 14-1/2
(368)
TOP
REAR
5 20-3/8 (518) 12-5/16
(313)
14-7/8
(378)
16-3/16
(411)
16 5/8
(422) 1-1/2 (38)
7.5-15 25-3/8 (645) 14 1/2
(368) 4-1/2 (114)
12 x 9
TOP
FRONT
7.5 20-3/8 (518)
5-7/8
(149)
12-7/16
(316)
13-3/4
(349)
22-3/4
(578) 1-1/2 (38)
10 22-7/8 (581)
15 25-3/8 (645) 18-5/8
(473)
TOP
REAR 7.5-15 25-3/8 (645) 12-5/16
(313)
12-7/16
(316)
13-3/4
(349)
18-5/8
(473) 4-1/2 (114)
VH245A
VH290A
VH267W
VH315W
VH240G
VH265G
VE240G
15 x 15
TOP
FRONT
5-7.5 20 3/8 (518) 3-1/2
(89)
18-13/16
(478)
16-3/16
(411)
12-11/16
(322) 1-1/2 (38)
10 22-7/8 (581)
TOP REAR 5 20 3/8 (518) 12-5/16
(313)
18-13/16
(478)
16-3/16
(411)
12-11/16
(322) 1-1/2 (38)
7.5-10 25 3/8 (645) 10 (254) 4 1/2 (114)
15 x 11
TOP
FRONT
7.5 20 3/8 (518)
3-1/2
(89)
14-7/8
(378)
16-3/16
(411)
16-5/8
(422) 1-1/2 (38)10 22-7/8 (581)
15 25 3/8 (645) 14-1/2
(368)
20 27 7/8 (708) 4 1/2 (114)
TOP
REAR
7.5-15 25 3/8 (645) 12-5/16
(313)
14-7/8
(378)
16-3/16
(411)
14-1/2
(368) 4-1/2(114)
20 27 7/8 (708)
Front or Rear Air Supply
TOP OF UNIT
Blower Deck
FRONT OF UNIT
Blower Duct Flange Location
Duct Flanges on Two Blower
76"
(1930.4mm)
ref.
35"
(889mm)
ref.
99" (2514.6) ref.
AB
CEC
D
F
DPN000530 Rev0
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Installation
10
Figure 6 Upflow 30 ton (VH and VE models) cabinet and floor planning dimensional data
UNIT DIMENSIONAL DATA
118"
(2997mm)
Plenum Flange
120"
(3048mm)
Base
33"
(838mm)
Air Return
Opening
113-1/2"
(2883mm)
120"
(3048mm)
Air Return
Opening
3-1/4"
(83mm)
24-1/4"
(616mm)
Floor Level
22"
(559mm)
DUCT CONNECTION DATA
Models With Rear Return
113-1/2"
(2883mm)
11"
(279mm)
4-1/4"
(108mm)
4"
(102mm)
1" (25.4mm) flange
for decorative
plenum alignment
Flanges provided on
blower outlets for
supply air ducting
5-1/2"
(140mm)
Shaded areas indicate a
recommended clearance
of 34" (864mm) for
component access and
filter removal
Air grille
supplied on
units with
front return
air only
2" (51mm)
Projection of
display bezel
5/8" (16mm)
2"
(51mm)
32"
(838mm)
Plenum
Flange
35"
(889mm)
Overall
122"
(3099mm)
Overall
33"
(838mm)
Base
76"
(1930mm)
1"
(25.4mm)
FLOOR CUTOUT DIMENSIONS
Models With Bottom Return
DPN00531 Rev0
DISCONTINUED
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Installation
11
Figure 7 Upflow 30 ton (VH and VE models) blower duct and deck dimensional data
Table 4 Upflow 15, 20 and 22 ton (VH and VE models) blower duct and deck dimensional data
Blower Supply
Motor
HP
Dimensional Data inches (mm)
ABCDEFG
VH380A
VH412W
VH363G
VE363G
15 x 5
TOP
FRONT 10 22-7/8
(581)
3-1/2
(89)
18-13/16
(478)
16-3/16
(411)
10
(254)
1-1/2
(38)
18-5/8
(473)
TOP
REAR 10 22-7/8
(581)
12-5/16
(313)
18-13/16
(478)
16-3/16
(411)
10
(254)
4-1/2
(114)
18 5/8
(473)
15 x11
TOP
FRONT
10-15 27-7/8
(708)
3-1/2
(89)
14-7/8
(378)
16-3/16
(411)
10
(254)
1-1/2
(38) 14-11/16
(373)
20 4-1/2
(114)
TOP
REAR 10-20 27-7/8
(708)
12-5/16
(313)
14-7/8
(378)
16-3/16
(411)
10
(254)
4-1/2
(114)
14-11/16
(373)
Front or Rear Air Supply
TOP OF UNIT
Blower Deck
FRONT OF UNIT
Blower Duct Flange Location
Duct Flanges on Three Blower
76"
(1930.4)
ref
35"
(889)
ref.
122" (3098.8) ref.
AB
C
E
C
D
F
GE
DPN000532 Rev0
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12
2.4 Piping
All fluid and refrigeration connections to the unit, with the exceptions of the condensate drain and
live steam, are sweat copper. Factory-installed piping brackets must not be removed. Field-installed
piping must be installed in accordance with local codes and must be properly assembled, supported,
isolated and insulated. Avoid piping runs through noise-sensitive areas, such as office walls and con-
ference rooms.
Refer to specific text and detailed diagrams in this manual for other unit-specific piping requirements
2.4.1 Drain Line
A 3/4" NPT is provided for the evaporator coil condensate drain. This drain line also drains the
humidifier, if applicable. The drain line must be located so it will not be exposed to freezing tempera-
tures. The drain should be at least the full size of the drain connection and pitched a minimum of 1/8"
per ft. (11mm per meter).
2.4.2 Piping Considerations for Raised-Floor Applications
All piping below the elevated floor must be located so that it offers the least resistance to air flow.
Careful planning of the piping layout under the raised floor is required to prevent the air flow from
being blocked. When installing piping on the subfloor, it is recommended that the pipes be mounted in
a horizontal plane rather than stacked one above the other. Whenever possible, the pipes should be
run parallel to the air flow.
2.5 Electrical Connections
Three-phase electrical service is required for all models in either 208, 230, 460 or 575V, 60Hz; or 200,
230 or 400V, 50 Hz. Electrical service shall conform to national and local electrical codes.
Install a manual electrical disconnect switch within 5 feet (1.6 m) of the unit in accordance with
codes. A factory-supplied disconnect switch may be factory-mounted within the unit and accessible
from the exterior.
NOTE
This line may contain boiling water. Use copper or other suitable material for the drain line.
For units without a condensate pump
The unit is shipped from the factory with an internally-mounted trap. No external trap is
required. The drain line must comply with all applicable codes.
For units with a factory-installed condensate pump option
The unit is shipped from the factory with a condensate pump installed. The condensate pump
discharge (drain) line must comply with all applicable codes.
For units with a field-installed condensate pump
The unit is shipped from the factory with the condensate pump option, unmounted in the unit,
which must be installed in the field. The unit has an internally mounted trap. The drain line
from the unit to the condensate pump does not require a trap. The discharge (drain) line from
the pump must comply with all applicable codes.
DISCONTINUED
PRODU C T
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Emerson Liebert Deluxe System 3 DX Installation guide
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- Installation guide
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